Fisting into the sigmoid

How to get elbow deep? r/sex - reddit: the front page

large intestine, first into the ascending colon (on the right side), up into the transverse colon (which runs along the top), down into the descending colon (on the left side), and finally into the Sigmoid colon.

Popping a Bottoms Second Hole Myth or Fact? - General

Mar 12, 2018 Suddenly, my lower sigmoid sphincter opens with one big push, and her fist pops into my sigmoid. I have to push a little more to get the increasing diameter of her forearm into me, but soon her whole forearm up to her elbow is inside me.